After serving with the Royal Artillery, Patrick Anthony Langan-Byrne transferred to the Royal Flying Corps. Having scored 10 victories as a D.H.2 pilot, he was killed in action when he was shot down by Oswald Boelke of Jasta 2.

Distinguished Service Order (DSO)

2nd Lt. Patrick Anthony Langan-Byrne, R.A. and R.F.C.
For conspicuous skill and gallantry. He has shown great pluck in attacking hostile machines, often against large odds. He has accounted for several. On one occasion, with two other machines, he attacked seventeen enemy machines, shot down one in flames and forced another to land.